Timing device.



W. J. I. ZELLIN & P. P. HUYUK.

TIMING DEVICE.

APPLIOATION FILED MAR.13,1914.

1,1 1 1,1 23. Patented Sept. 22, 1914.

4 SHEETS-SHEET 1.

WITNESSESI- INVENTOR5 a 4 5% L? M v 6 2* W W. J. J. ZELLIN & P. P. HUYCK.

TIMING DEVICE. APPLIOATION'IILED MAR. 13, 1914.

Patented Sept. 22, 1914.

4 SHEETSSHEET 2.

W|TNESSES.'

MINVENTQF S A @ma rm THE NOQRIS PETERS 60.. PHOTO-LITHQ. W'ASHINGTON, D. c.

W. J. J. ZELLIN & F. P. HUYGK.

TIMING DEVICE.

APPLIOATION FILED MAB-.13, 1914. 1 ,1 1 1, 1 3, Patented Sept. 22, 1914.

4 SHEBT8SKEET 3.

Fig. 4.

- WITNESSES? I INVENTORS THE NORRIS PETERS 50., PHOID'LITHON WASHINGTUN. D, C.-

w. Jl J. ZELLIN & 1?. P. HUYGK.

TIMING DEVICE. APPLICATION FILED mums, 1914.

1 ,1 1 1,123. Patented Sept. 22, 1 14.

4 SHEETS-SHEET 4.

a m'lfllllllllmmmin W?" J5 I" THE NORRIS PETERS CO" FHOTO-LlTHO-, WASHINGTON, D C

PATENT OFFICE.

.WILHELM J'. J. ZELLIN AND FRANCIS P.

I-IUYCK, UTE TOLEDO, OHIO; SAID HUYC ASSIGNOR, TO SAID ZELLIN.

TIMING DEVICE.

Specification of Letters Patent.

Patented Sept. 22, 1914.

Application filed March 13, 1914. Serial No. 824,535.

To all whom it may concern:

Be it known that we, lViLI-IELM J. J. Zinmrn and FRANCIS P. Huron, citizens of the United States, and residents of Toledo, in thecount-y of Lucas and State of Ohio, have invented a certain new and useful Timing Device; and we do hereby declare the following to be scription of the invention, such as will enable others skilled in the art to which it apper'ains to make and use the same, reference being had to the accompany draw- I v 0 lugs, and y to the characters of reference 'n'iarked thereon, wnich form a part of this specification. I

' This invention relates to timing devices, and while it is particularly designed with reference to the needs of photographers in connection with the developing of negatives, it not restricted. to such u ie, as it may be used in any connection where it is desired t secure a predetermined tin'iing between successive acts and for which the device may be adapted or appropriate either in its present or in amodified form In photography it has been determined that in the developing of negatives the time required after the placing of negatives in a developing solution until the high lights appear is one-twelfth of thetime required to complete the developing after the high lights appear, so that the ratio of one perind of time to the other is the same as 1to12.

The primary object of this invention is the provision of a device of simple and eilicient construction, which is operable to secure an accurate predetermined timing between successive acts, whereby, if the device is used in connection with the developing of negatives n length of time required for the COtll l QhOR of the developing after the appearance of the high lights w1ll b-e accurately determined in proper ratio to the trongth of he developing solution, for if the solution is weak and it takes longer to develop the high lights it will take a lor 'er time to complete the negatives after t a full, clear, and exact de- Y adapted for use 1n connection with photogadvantages and uses of the invention will be apparent from the following detailed description thereof.

T he invention is fully described in the following specification, and While in its broader aspect, it is capable of numerous modifications and of uses in diderent connections, a single embodiment only thereof,

raphy, is illustrated in the accompanying drawings, in which,

Figure 1 is an enlarged face view of the mechanism embodying the invention, with parts broken away. Fig. 2 is a vertical section taken at the rear of the front plate and illustrating the main parts of a. clock or actuating mechanism. Figs. 3 and 4 are opposite side views thereof with the clock or o her actuating mechanism removed, and Figs. and 6 are different details of the mechanism.

Referring to the drawings, l'designates a plate, which may comprise a part of a case or housing for the mechanism, and which, in the present instance, carries the native parts. Fixedly carried, in the sent instance, in spaced relation by the H to 1 at one side thereof, are the inner and outer plates 2 and 3, respectively, between which is mounted an ordinary alarm clock mechanism, the particular construction of which forms no part of this invention.

The driving mechanism, illustrated in Fig. 2, comprises a clock train of which 4 is the key, stem carrying the customary spring not shown), 6 the hour-hand shaft, and 7 the shaft on which the escapementwheel 8 is mounted, rotation being communicated from the stem 4 to the shaft 6 and from the shaft 6 to the shaft 7 through suitable intermediate gearing, as indicated. The balance wheel 9, of the mechanism, is nounted on the shaft 10 and has operative connection with the escapelnent-wheel 8. through a lever 11 and connected pallet 12 in a manner well understood in the art. A balance spring 13 is mountedon a shaft 10 with the balance wheel.

The alarm of the clock mechanism, in the present instance, comprises a striking arm 14, which is mounted for vibratory movements on a shaft 15 and is intended, when vibrated, to have striking contact with a bell or sounding member 16 that is carried by the plate 1 at the outer side thereof. A serrated-Wheel 17 is intended, when rotated, to coact with a finger 18, projecting from the shaft 15, whereby to impart rapid rocking movements to such shaft. The wheel 17 is mounted on a shaft 19 and has connection with aspring driven shaft 20 through the medium of a suitable gear train, as shown.

In carrying out the idea of our invention, we mount a wheel 21 on the forwardly pro jected end of the shaft 6 in advance of the plate 3, and also mount a wheel 22 on a shaft 23, which, in the present instance, is suitably journaled in a bearing carried by a bracket 24 secured to the plate 3, the inner end of the shaft 23 carrying, in the present instance, a gear 25 in mesh with the gear 6*, which is carried by the shaft 6 and is one ofthe train of gears which communicate rotation from the winding-stem 4 to the escapement-wheel 8. It is thus evident that when the shaft 6 is being rotated, the wheels 21 and 22 will have reverse rotation communicated thereto at different speeds. The Wheels 21 and 22, in the present instance, are of disk form with V-shaped edges to enable each to have frictional engagement within a peripheral groove of a wheel 26, which is carried by a stub-shaft projecting from a lever 27. This lever is fulcrumed to the plate 3, as at 28, and carries the wheel 26 in position to be moved into peripheral driving engagement with one or the other of the wheels 21, 22 upon a very slight rocking movement of the lever. I

The end of the lever 27 which is opposed to. the end thereof carrying the wheel 26, is connected by a link 29 to a crank pin 30 on a wheel 31, which wheel is suitably carried for rocking movements in advance of the left-hand portion of the plate 3. This wheel has pins 32 and 32" projecting laterally therefrom at opposite sides of its axes, and extending between these pins, transversely of the wheel, is a draft-bar 33, which pivotally connects at the right-hand end thereof to the adjacent end of a bell-crank lever 34, as at The lever 34 is fulcrumed at the rear of the plate 3 to a post 36, pro jecting inwardly from said plate, and has the end thereof opposed to that to which the bar 33 is attached, pivotally connected to a push-rod 37. This push-rod extends through registering openings in the plates 1 and 2, substantially at right angles to the arm of the lever 34 to which it is attached, and is provided at the rear of the plate 1 with a push-button 38. A compression-spring 39 is disposed between the plate 2 and push button 38 and acts thereon to normally retain .the push-rod 37 at the limit of its rearward movement. The draft-bar 33 is adapted to have limited rocking movements between the pins 32, 32 in the plane thereof and is provided, in the present instance, at the left of such pins with the shoulders 40 and 40', which are positioned to respectively engage and rock the pins 32, 32, when the bar 33 is moved to the right and is in either its raised or lowered positions. A spring-finger 41 projects to the right from the upper peripheral portion of the wheel 31 and is provided at its free end with a loop 42 throu h which. the draft-bar 33 loosely projects, t e spring-finger and loop being so disposed that they yieldingly retain the free or left end portion of the bar 33 in raised contact with the pin 32 when the wheel 31 is in the position shown in Fig. 5. Upon the next rocking movement of the wheel 31, which is to the right or in clockwise direction, the spring-finger 41 is moved sufliciently to permit the bar 33 to lower into position for the shoulder 40 thereof to have engagement with the pin 32 when said bar is again moved to the right. It is thus evident that the bar 33, upon successive retracting movements thereof, alternately engages the pins 32 and 32 whereby the wheel 31 is rocked first in one direction and then in the other, and that such rocking movements are communicated to the lever 27 through the link 29.

The wheel 26 is provided at one side of its I axiswith a pin 43 which is driven with the wheel in clockwise direction when the wheel 22 is acting as the driver and in counterclockwise direction when the wheel 21 is acting as the driver. Vhen the pin 43 is being moved in counter-clockwise direction, it is adapted at a predetermined point in such movement to engage the iegistering end of a lever arm 44 and impart a slight rocking movement to such arm. This lever arm is fulcrumed to a stud 45 projectin from the upper portion of the plate 3 and has an arm 46 projecting to the left from its inner or fulcrumed end at the side of the lower edge portion of a stop-wheel 47 and tcrminatesat its free end in a pair of inwardly projecting fingers 48, 49, which are spaced both transversely and longitudinall of the lever-arm 46, as shown in Figs. 1 an 3. A stoppin 50 projects from the outer side of the wheel 47 in position to strike against and have its revolution stopped by the finger 48 when the lever arm 46 is in its normal raised position. The wheel 47 is fixed to the shaft 19 with the serrated signal mechanism wheel 17, and serves as the control wheel for the alarm or signal mechanism. hen the pin 43 coaets with and imparts a rocking movement to the lever 44, 46, the-finger 48 thereof is lowered from stop engagement with the pin 50, thus permitting such wheel to have a single rotation imparted thereto by the signal mechanism, the rotation thereof being stopped at the end of a single revolution by reason of the pin 50 striking the finger 49, which stands in the pathof movement of the pin when the arm 46 of the lever is'lowered.

The rocking movements of the lever 44, 41-6 are limited by an arm 51 projecting from the fulcrumed portion thereof and being forked at its free end to receive a stop-post 52, projecting from the plate The post 52 is narrower than the space in the forked end oft-he arm 51 to permit such arm to have limited rocking movements relative thereto. A spring-finger 53 bears at one end against the post 52 and extends therefrom to and around the stud 45 and has its other endfixed to the inner'end portion of the lever arm 51in manner to tend to urge the lever in a direction for the finger d8 of the arm 46100 stand in the path of movement of the stop-pin 50.

Depending from a stud 5a which projects from the plate 3, in the present instance, at

the left f the shaft 6, is a lever arm 55 which extends at i s lower end below the plate 3 and pivotally carries a notched finger 56, which finger is pivoted to the lever arm, as at 57, and rises therefrom at the rear of the plate 3 in position for its notch 58 to re ceive a pin 59 projecting fromone side of the balance-wheel 9 when the lever arm 44 is in the position of "its movement shown in F 1. The catch-finger is provided with an ear 60, which coacts with a side of the leverarm 55 to limit the movements of the catch finger to the right relative to the lever-arm, and a spring finger 61 connects the lever-arm and ear to yieldingly retain the finger in the position which it assumes when the ear is in step contact'with the lever-arm. A springfinger 62 fixedly projects from the plate 3 and hasits end in contact with a pin 63 on the lever-arm 55 and tends to hold thelever arm at one limit or the other of its rocking movements. In Fig. 1, the spring-finger 62 is shown as acting against the pin 63 to tend to retain the lever-arm 55 in balance-wheel stopping position,. and when the lever is thrown to the left to balance-wheel releasing position the sideof the finger end 62 acts against the pin 63 to tend to retain the leverarm in such position.

Projecting from one side of the inner end portion of the lever-arm 55 is a short arm 64, which receives the lower endthrust of a rod 65, which is guided for reciprocatory movements by a guide part 66 at one end and by a forked portion 67 atthe opposite end thereof straddling the shaft 19. Then the lever 55-6 1 is at the left of its movement, or in balance-wheel released position, the rod is held thereby in position for a table or flange 68 on the forked end portion thereof to be engaged and forced away from the shaft 19 by a pin 69 on the inner side of the wheel l7 when such wheel is revolved. The engaging of the table 68 bythe pin 69 upon a rotation of the wheel 4:7, forces the rod65 downward or away from the shaft 19 and effects a throwing 'of the lever 5564 to the right into position for the catch-finger 56 thereof to engage the balance-wheel pin 59 and stop the movement of the balance-wheel.

The lever 556 1' is moved from balancewheel locking osition by the upward movement of a draft rod 70, which is pivotally suspended, as at 71, from the free end portion of an arm 7 2, which projects laterally from the end of the lever 27, carrying the wheel 26. The lower end of the draftrod 70 extends below the lever-arm 64 and is then bent upwardly to place the end thereof in position to have upward thrust contact with the lower edge of the arm 64: when the rod is raised from its lowered position. The bent end portion of the rod 70 is guided for reciprocatory movements by a guide part 73. It is thus evident that when the lever 27 is moved to throw the wheel 26 out of engagement with the wheel 21 and into engagement vith the wheel 22 the draft-rod 70 is raised to effect a throwing of the lever 55-64 from balance-wheel locking position. The lever 27 is yieldingly held in one or the other of its limits of rocking movements by a springfinger 747., which is fixed at one end to the plate 3, as at 75, and has its opposite end provided with a sf-shaped nose, which ongages a pin 7 6 on the lever-arm 7 2, such pin moving from one side to the other of the tapered nose as the lever-arm 72 is rocked.

A spring washer 77 is mounted on the stud with the wheel 26 and serves to resist a free turning of the wheel on the stud, the resistance being sufficient to counteract the tension of the spring 53 on the lever at1 l6 when the pin B is acting against and holding said lever out of normal position. This prevents a slight shifting of the wheel due to the lever pressure against the pin 43 when the wheel is being shifted from and to the other of the wheels 21, 22. In the use of this form of our invention in connection with the developing of negatives, the operator, at the time of placing one or more negatives in the developing bath, presses the push-button 86 (the timing mechanism being in the position shown in Fig. 1), thus rocking the lever and moving the draft-rod 33, which is attached thereto, to cause the shoulder 40 thereof to engage the pin 32 on the wheel 31 and move such wheel a predetermined distance in clockwise direction. Such move ment of the wheel 31 causes the wheel 26 to be thrown into driving contact with the wheel 22, due to the connecting of the wheel 31 and lever by the link 29. The movement, which is thus imparted to the lever 27, causes an upward movement of the draft-rod 70 and a consequent movement of the lever 5564 to release the catch-finger 56 from locking engagement with the pin 59 of the balance-wheel, ,9 to permit movements of such wheel under the influence of the spring l 21 should be approximately as 1 to 12, as

13, thereby starting the clock or other mechanism, which drivesthe wheels 21 and 22. Upon a running of the clock mechanism with the wheel 22 in driving engagement with the wheel 26, said latter wheel is caused to rotate in a direction to move the pin 4-3 away from the actuating end of the leverarm 1%. The operator having thus started the timing mechanism vatches the negatives until the high lights begin to appear, and immediately upon the appearance of such lights again presses the push-button 88 to effect a shifting of the wheel 26 from ongagement with the wheel 22 and into ongagement with the wheel 21, so that the direction of driving of the wheel 26 will be reversed. The pushing of the push-button 38 causes the wheel 31 to be moved in counter-- clockwise direction. due to the draft-bar at this period in the operation standing in position for the shoulder 40 thereof to engage and move the pin 32 of said wheel. The wheel 26 is now driven in counter-clock wise direction by the wheel 21, or in the reverse direction to the direction in which it was driven by the wheel 22, thereby moving the pin t?) toward the coacting end of the lever-arm 44. When the wheel 26 has turned sutliciently in this direction to nearly return the oi, to its starting position such pin will engage the registering end of the lever L? and a movement of such lever and a consequent lowering of the free end portion of the attached arm d6 to move the linger a thereof. which now stands in stop engagement with the pin on the wheel 4:7, out of stop engagement with such pin, thus permitting the wheel e7 to rotate under the influence of the spring or other actuating means of the signaling mechanism. The wheel .27 is stopped at the end of substantially a complete rotation thereof by the pin 50 coacting with the stop finger 49, which stands in reg ister with such pin when the lever-arm 14: is at the limit of its outward movement. The rotation of the serrated wheel 17, which takes place upon a rotation of the wheel 47, causes the striker-arm to have vibratory contact with the bell 16, in the present instance, to signal the operator that the negatives are ready to be taken from the developing bath. Upon a rotation of the wheel 4%? the pin 69 thereon enacts with the flange or table portion 68 of the thrust rod and forces such rod downward against the upper edge of the lever-arm 64, thereby throwing the lever sa elinto position for the c tch-finger 56 thereof to have catch engagement with the pin 59 on the balance-wheel 9 and stop the operation of the clock or other actuating mechanism.

In the use of our timing mechanism for negative developing purposes, the ratio of driving of the wheel 26 by the wheels 22 and it is found from experiments that it takes approximately twelve times as long for the completion of the developing of a negative after the high lights appear as it takes for the high lights to appear after the placing of the negative in the bath. Thisratio of driving is accomplished, in the present instance, partly by the difference in sizes of the wheels 21 and 22, and partly by the gearing connection of the respective wheels with the driving mechanism. It will of course be understood that the ratio of dr' ing of the wheel 26 by the wheels 21 and 22 may be changed to suit the connection in which the timing device is'to be used, and that while the device has been particularly described for use in connection with the developing of negatives it is not restricted to such use, but is intended for use in any connection for which it may be adapted or appropriate.

e also wish it understood that our invention is not limited to any specific construction, arrangement or form of the parts thereof, or to the use of the same in connection with any particular form of driving and signaling mechanism, as numerous changes may be made in the invention and the same adapted to. numerous forms of driving: and signaling mechanisms without departing from the spirit of the invention.

Having thus described our invention, what we claim as new, and desire to secure by Letters Patent, is,-

1. In combination, a rotatable element, manually controlled gear mechanism operable to impart successive movements to said element, the period of one movement determining the period of a later movement, and signal means automatically operable at a predetermined point in the later period of movement.

2. In combination, a rotatable element, a. gear mechanism operable to impart difi'erentially timed movements in lirst one and then another direction to said element, and means operable to stop said mechanism at a predetermined point in the movement of said element in one direction.

In combination, a rotatable element, mechanism operable to impart successive differentially timed movements to said element, the period of one movement determining the period of another, and means automatically operable to stop the element driving action of said mechanism at a predetermined point in one movement of the element.

41. In combination, a movable element, mechanism operable to impart successive timed movements to said element, the period of one movement being more or less uncertain and determining the period of a later movement, and means automatically operable to stop the element driving action of saw said mechanism at a predetermined point in the later period of movement of said element.

cally operable to impart successive timed movements to said element, the period of one movement being more or less uncertain and determining the period of a later movement of said element, and means automatically operable to stop the element driving action of said mechanism at a predetermined point in the later period of movement of said element.

6. In combination, a movable element, manually controlled mechanism mechanically operable to impart successive timed movements in different directions to said element, and means automatically operable to stop the element driving action of said mechanism at a predetermined point in one movement of the element.

7. In combination, a movable element, mechanism mechanically operable to impart different timed movements to said element, and means automatically operable at a predetermined point in one movement of said element to stop the element driving action of said mechanism and to signal the operator. I

8. In combination, a rotatable element, mechanism operable to impart successivei diflerentially timed movements to said element, one movement bearing a predetermined ratio to the other, and means automatically operable at a predetermined point in one movement of said element to stop the member driving action of said mecha nism and to render a signal.

9.'In combination, a rotatable element, mechanism operable to impart successive differentially timed movements to said element, the period of one movement determining the period of another, and means automatically operable at a predetermined point in one movement of said element to stop the member driving action of said mechanism and to render a signal.

10. In combination, a rotatable element, mechanism operable to impart successive movements to said element, the period of one movement determining the period of a later movement, means manually operable to change the element driving action of said mechanism from one movement to another, and signal means automatically operable at a predetermined point in the later movement of said element.

11. In combination, a movable element,

mechanism operable to impart successive.

movements to said element, the period of one movement determinlng the period of another movement, means manually operable.

to changethe element driving action of said mechanism from one movement to another,

and means automatically operable to stop the element driving action of said mecha nism at a predetermined point in the later period of movement of said element.

12. In combination, a movable element, mechanism operable to impart successive movements to said element, the period of one movement determining the period of a later movement, means manually operable to change the element driving action of said mechanism from one movement to another, and means automatically operable at a predetermined point in the later period of movement of said element to stop the element driving action of said mechanism and to render a signal.

13. In combination, a movable element, mechanism operable to drive said element in first one and then in the reverse direction at predetermined speeds, means manually operable to change the element driving action of said mechanism, and means automatically operable to stop the element driving action of said mechanism at a predetermined point in the reverse driving of said element.

14:. In combination, a movable element, mechanism operable to impart successive forward and reverse rotation at predetermined speeds to said element, means manually operable to change the element driving action of said mechanism, and means automatically operable at a predetermined point in the reverse driving of said element to stop the element driving action of saidmechanism and to render a signal.

15. in combination, a rotatable element, i

mechanism having separate driving parts for said element together With means forrendering one or the other of said parts active With respect to said element, the period of movement of one of said parts determining the period of movement of the other, and signal means automatically operable at a predetermined point in the movement of said element by one of said parts.

16. In combination, a rotatable element, mechanism having separate driving parts for said element together with means for rendering one or the other of said parts active with respect to said element, the period of movement of one of said parts determining the period of movement of the other, and means automatically operable at a predetermined point in the movement of said element by one of said parts to stop the element driving action of said mechanism and to render a signal.

17. In combination, a signal device, a rotatable element, mechanism operable to impart successive differently timed movements to said element, the period of one movement determining the period of a later movement, and signal release means intermediate said element and signal device and operable at a predetermined point in the said later movement of said element to render the signal device active.

18. In combination, a normally operating signal device, a movable element, mechanism operable to impart successive movements to said element, one period of movement of said element determining the period of a later movement thereof, and stop means for said signal device automatically operable to release said device at a predetermined point in the said later movement of the element.

19. In combination, a signal device, a movable element, mechanism operable to impart successive movements to said element, the period of one movement being determined by the period of a former move ment, and means normally serving as a stop for said signal device and operable by said element at a predetermined point in its later period of movement to release the signal device and then to ree'ngage the same.

20. In combination, a normally operating signal device, stop means in connection with said device comprising a revolnble stop-pin carried by a part of said device, and a lever having two stops for said pin which cooperate to releasably stop a revoluble movement of said pin, mechanism having a successively movable driven part which at a predetermined point in one of its movements coacts with said lever to temporarily release its stop engagement with said pin, the successive movements of said element being of predetermined ratio, and manually controlled means operable to efi'ect successive movements of said element by said mechanism.

21. In combination, a movable element, mechanism operable to impart successive differentially timed movements to said element, means manually operable to place said element in engagement with said mechanism for successive movements, and means operable to effect a stopping of the element driving action of said mechanism when the element is at a predetermined point in one movement thereof.

In combination, a movable element, mechanism operable to impart successive movements to said element, means operable to lock said mechanism against movement or to release the same, and means manually operable to move said locking means to release said mechanism and to place said element in driving connection with the mechanism and also operable to change the driving connection of the said element and mechanism, and means operable by said ele ment at a predetermined point in a movement thereof to operate said locking means to stop the driving action of said mechanism.

In combination, a movable element, a

he mechanism operable to impart forvw d and reverse movements to said element at predetermined speeds, a stop member movable into position to stop the driv im; action of said mechanism or to release the same, means manually operable to move said stop member to released position and to crznnect said. element with said mechani m for forward, driving movement and also operable to change the connection of the element with said mechanism to secure a reverse driving of the element, and means operable at a predetermined point in the reverse driving movement of said element to move s id, stop member to mechanism loclv m p tion. In combination, a drive mechanism having reversely driven members, an element movable into driving engagement with one or the other of said members, means controlling the shifting movements of said element, and means anton'iaticallv operable t p the driving action of said element by one of said members when said element at a predetermined point in its movement. In cmnbimition, a driving mechanism having reversely driven members, an. element mov: ble into driving engagement with either of said members, manually contrz/llal means operable to place the element in en ement with either of said members,

I means :mtomatically operable at a predetermined point in a movement of the element by one ot' said members to stop the driving action of said mechanism and to render a .iignal.

21" In c nnbi11ati0m a driving mechanism having parts which are reversely driven at different predetermined speeds, an element movable into drivingengagement with one or the other oi said parts whereby it is driven in one direttion or another, means controlling the connection of said element with the r spective parts, a stop member for said mechanism. and means autmnatimlly operable to shift said stop member to mechanism locking position at a predetermined point in a movement of said element by one oi said parts.

27. In combination, a driving mechanism having revcrscly driven parts, a lock member f said mechanism, a rotatable element adapted to be driven in one direction or another bv the respective parts of said mechanism, means operable to change the connection of said element with said parts and to release the locking engagement of said member with said mechanism when the element is in engagement with one of said parts. and means automatically ope able to move said member to locking position at a predetermined point in a movement of the element by the other of said parts.

. 28. In combination, a driving mechanism, a rotatable'element, means operable to place said element in connection with said mechanism whereby it has difierent rotary movements, and means operable by said element at a predetermined point in one movement thereof to render a signal.

29. In combination, a driving mechanism, a rotatable element,imeans operable to place said element in connection with said mechanism whereby it has different movements, and means automatically operable by said element at a predetermined point in one movement thereof to stop the element driving action of said mechanism.

30. In combination, a driving mechanism having two parts reversely driven at different speeds, a driven element, control means operable to connect said driven element with one or the other of said parts whereby movement in one or the other direction is im parted to said element, locking means for said driving mechanism, connection between said loclting means and control means for imparting mechanism releasing movements to said locking means when the control means is moved to connect said element with one of said parts, and means automatically operable by said element at a predetermined point in a movement thereof by the other of said parts to move said locking means to locking position.

31: In combination, a driving mechanism having a pair of reversely driven parts, a driven element, a control member, means operable by like successive movements or said control member to connect said element with first one and then the other of said parts, and signal means automatically operable by said element at a predetermined point in one direction of movement thereof.

32. In combination, a drive mechanism having a plurality of reversely driven parts, a driven element, a control member, means operable by successive movements of said control member to engage said element with one or the other of said parts, and means automatically operable by said element at a predetermined point in its movement in one direction to stop the driving of said element.

33. In combination, a driving mechanism having a plurality of reversely driven drive parts, the speed of rotation of one of said parts being in predetermined ratio to the speed of rotation of another of said parts, a otatable driven element, means operable to successively place said element in driving connection with first one and then another ofv said drive parts, a mechanism locking member, means operable to move said member from looking position when said element is placed in connection with one of said drive parts, and means automatically operpoint in a movement of the same by the other drive part to move said member to locking position.

In combination, a driving mechanism having a pair oit'reversely driven parts, a rotatable driven element, control means operable to connect said driven elementwith one or the other of said parts, a mechanism locking member, connection between said member and control means to move said member from locking position when the element is placed in connection with one of said parts, and means automatically operable by said element at a predetermined point in its movement by the other of said parts to move said member to locking posi tion and to render a signal.

35. in combination, a drive mechanism having two reversely driven parts, a balance means for said driving mechanism, locking means for said balance means, a lover having connection with; said locking means and movable to release the same from engagement with said balance means, and a driven member carried by said lever and movableby movements of the lever into engagement with one or the other of said drive parts.

36. In combination, a drive mechanism having reversely driven drive parts, means movable to lock said mechanism against movement or to release the same, a driven element movable into engagement with either of the drive parts of said mechanism, means operable to move said locking means to released position upon a movement of said element into engagement with one of said drive parts, and means operable by said element at a predetermined point in the movement thereof which is actuated by the other of said parts to move said locking means into locking position.

37. In combination, a driving mechanism having reversely driven members, an element movable into driving engagement with either of said members, a locking means for said mechanism, a signal means, means operable by a movement of said element into engagement with one of said members to move said locking means to released position, and means operable by said element at a predetermined point in the movement thereof which is actuated by said other member for rendering the signal means active and for moving said locking means to mechanism locking position.

38. In combination, a driving mechanism having reversely drivenv members, an element movable into driving engagement with either of said members, stop means for said mechanism, signal means, and means operable at a predetermined point in a movement of said element by one of said memberS to render the signal means active and to move the stop means to mechanism stopping position.

39. In combination, a movable element, mechanism operable to impart different timed movements to said element, a normally operating signal mechanism, and means normally preventing an operating of said signal mechanism and operable by said element at a predetermined point in one movement thereof to release and permit an operating of the signal mechanism.

40. In combination, a movable element, mechanism operable to impart different timed movements to said element, one movement bearing a predetermined ratio to the other, normally active signal means having Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

